This article is cited in 1 paper

Plasma Investigations

Excitation of stationary cross-flow instability modes using a plasma actuator based on dielectric barrier discharge

A. Ya. Kotvitskii^a, I. A. Moralev^a, M. V. Ustinov^b, A. A. Abdullaev<sup>c

a</sup> Joint Institute for High Temperatures, Russian Academy of Sciences, Moscow
^b Central Aerohydrodynamic Institute
^c Moscow Institute of Physics and Technology (National Research University), Dolgoprudny, Moscow Region

Abstract: The article presents the results of studying the stationary mode of cross-flow instability excited by a plasma actuator based on dielectric barrier discharge in a three-dimensional boundary layer on a swept plate with an induced pressure gradient. It is shown that the actuator generates an instability mode of a given wavelength with an initial amplitude of up to $2\%$ of the free-stream velocity, while the signal-to-noise ratio is no greater than $15\%$. As a result of a parametric study, a family of growth curves of the excited instability mode was obtained as a function of the parameters of the voltage supplying the discharge. It is shown that the initial amplitude of stationary cross-flow vortices generated by the actuator in the studied range of parameters depends quadratically on the overvoltage at the electrodes and linearly on frequency, which coincides with a similar dependence for the actuator thrust.

UDC: 533.69.01

Received: 02.12.2022
Revised: 03.03.2023
Accepted: 11.05.2023

DOI: 10.31857/S004036442306008X

 English version: High Temperature, 2023, 61:6, 764–769